45 static void l2cap_sock_init(struct sock *sk, struct sock *parent);
83 	struct sock *sk = sock->sk;  in l2cap_sock_bind()  local
84 	struct l2cap_chan *chan = l2cap_pi(sk)->chan;  in l2cap_sock_bind()
88 	BT_DBG("sk %p", sk);  in l2cap_sock_bind()
111 	lock_sock(sk);  in l2cap_sock_bind()
113 	if (sk->sk_state != BT_OPEN) {  in l2cap_sock_bind()
168 	sk->sk_state = BT_BOUND;  in l2cap_sock_bind()
171 	release_sock(sk);  in l2cap_sock_bind()
178 	struct sock *sk = sock->sk;  in l2cap_sock_connect()  local
179 	struct l2cap_chan *chan = l2cap_pi(sk)->chan;  in l2cap_sock_connect()
183 	BT_DBG("sk %p", sk);  in l2cap_sock_connect()
243 	lock_sock(sk);  in l2cap_sock_connect()
245 	err = bt_sock_wait_state(sk, BT_CONNECTED,  in l2cap_sock_connect()
246 				 sock_sndtimeo(sk, flags & O_NONBLOCK));  in l2cap_sock_connect()
248 	release_sock(sk);  in l2cap_sock_connect()
255 	struct sock *sk = sock->sk;  in l2cap_sock_listen()  local
256 	struct l2cap_chan *chan = l2cap_pi(sk)->chan;  in l2cap_sock_listen()
259 	BT_DBG("sk %p backlog %d", sk, backlog);  in l2cap_sock_listen()
261 	lock_sock(sk);  in l2cap_sock_listen()
263 	if (sk->sk_state != BT_BOUND) {  in l2cap_sock_listen()
268 	if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM) {  in l2cap_sock_listen()
287 	sk->sk_max_ack_backlog = backlog;  in l2cap_sock_listen()
288 	sk->sk_ack_backlog = 0;  in l2cap_sock_listen()
297 	sk->sk_state = BT_LISTEN;  in l2cap_sock_listen()
300 	release_sock(sk);  in l2cap_sock_listen()
308 	struct sock *sk = sock->sk, *nsk;  in l2cap_sock_accept()  local
312 	lock_sock_nested(sk, L2CAP_NESTING_PARENT);  in l2cap_sock_accept()
314 	timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK);  in l2cap_sock_accept()
316 	BT_DBG("sk %p timeo %ld", sk, timeo);  in l2cap_sock_accept()
319 	add_wait_queue_exclusive(sk_sleep(sk), &wait);  in l2cap_sock_accept()
321 		if (sk->sk_state != BT_LISTEN) {  in l2cap_sock_accept()
326 		nsk = bt_accept_dequeue(sk, newsock);  in l2cap_sock_accept()
340 		release_sock(sk);  in l2cap_sock_accept()
344 		lock_sock_nested(sk, L2CAP_NESTING_PARENT);  in l2cap_sock_accept()
346 	remove_wait_queue(sk_sleep(sk), &wait);  in l2cap_sock_accept()
356 	release_sock(sk);  in l2cap_sock_accept()
364 	struct sock *sk = sock->sk;  in l2cap_sock_getname()  local
365 	struct l2cap_chan *chan = l2cap_pi(sk)->chan;  in l2cap_sock_getname()
367 	BT_DBG("sock %p, sk %p", sock, sk);  in l2cap_sock_getname()
369 	if (peer && sk->sk_state != BT_CONNECTED &&  in l2cap_sock_getname()
370 	    sk->sk_state != BT_CONNECT && sk->sk_state != BT_CONNECT2 &&  in l2cap_sock_getname()
371 	    sk->sk_state != BT_CONFIG)  in l2cap_sock_getname()
395 	struct sock *sk = sock->sk;  in l2cap_sock_getsockopt_old()  local
396 	struct l2cap_chan *chan = l2cap_pi(sk)->chan;  in l2cap_sock_getsockopt_old()
402 	BT_DBG("sk %p", sk);  in l2cap_sock_getsockopt_old()
407 	lock_sock(sk);  in l2cap_sock_getsockopt_old()
469 		if (sk->sk_state != BT_CONNECTED &&  in l2cap_sock_getsockopt_old()
470 		    !(sk->sk_state == BT_CONNECT2 &&  in l2cap_sock_getsockopt_old()
471 		      test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) {  in l2cap_sock_getsockopt_old()
491 	release_sock(sk);  in l2cap_sock_getsockopt_old()
498 	struct sock *sk = sock->sk;  in l2cap_sock_getsockopt()  local
499 	struct l2cap_chan *chan = l2cap_pi(sk)->chan;  in l2cap_sock_getsockopt()
504 	BT_DBG("sk %p", sk);  in l2cap_sock_getsockopt()
515 	lock_sock(sk);  in l2cap_sock_getsockopt()
530 			if (sk->sk_state == BT_CONNECTED)  in l2cap_sock_getsockopt()
543 		if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {  in l2cap_sock_getsockopt()
548 		if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags),  in l2cap_sock_getsockopt()
562 		if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM  in l2cap_sock_getsockopt()
563 		    && sk->sk_type != SOCK_RAW) {  in l2cap_sock_getsockopt()
587 		if (sk->sk_state != BT_CONNECTED) {  in l2cap_sock_getsockopt()
611 	release_sock(sk);  in l2cap_sock_getsockopt()
634 	struct sock *sk = sock->sk;  in l2cap_sock_setsockopt_old()  local
635 	struct l2cap_chan *chan = l2cap_pi(sk)->chan;  in l2cap_sock_setsockopt_old()
640 	BT_DBG("sk %p", sk);  in l2cap_sock_setsockopt_old()
642 	lock_sock(sk);  in l2cap_sock_setsockopt_old()
651 		if (sk->sk_state == BT_CONNECTED) {  in l2cap_sock_setsockopt_old()
739 	release_sock(sk);  in l2cap_sock_setsockopt_old()
746 	struct sock *sk = sock->sk;  in l2cap_sock_setsockopt()  local
747 	struct l2cap_chan *chan = l2cap_pi(sk)->chan;  in l2cap_sock_setsockopt()
754 	BT_DBG("sk %p", sk);  in l2cap_sock_setsockopt()
762 	lock_sock(sk);  in l2cap_sock_setsockopt()
799 			sk->sk_state = BT_CONFIG;  in l2cap_sock_setsockopt()
803 		} else if ((sk->sk_state == BT_CONNECT2 &&  in l2cap_sock_setsockopt()
804 			    test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) ||  in l2cap_sock_setsockopt()
805 			   sk->sk_state == BT_CONNECTED) {  in l2cap_sock_setsockopt()
807 				set_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags);  in l2cap_sock_setsockopt()
809 				sk->sk_state_change(sk);  in l2cap_sock_setsockopt()
816 		if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {  in l2cap_sock_setsockopt()
827 			set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags);  in l2cap_sock_setsockopt()
830 			clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags);  in l2cap_sock_setsockopt()
902 		if (sk->sk_state == BT_CONNECTED &&  in l2cap_sock_setsockopt()
926 		if (sk->sk_state == BT_CONNECTED) {  in l2cap_sock_setsockopt()
944 	release_sock(sk);  in l2cap_sock_setsockopt()
951 	struct sock *sk = sock->sk;  in l2cap_sock_sendmsg()  local
952 	struct l2cap_chan *chan = l2cap_pi(sk)->chan;  in l2cap_sock_sendmsg()
955 	BT_DBG("sock %p, sk %p", sock, sk);  in l2cap_sock_sendmsg()
957 	err = sock_error(sk);  in l2cap_sock_sendmsg()
964 	if (sk->sk_state != BT_CONNECTED)  in l2cap_sock_sendmsg()
967 	lock_sock(sk);  in l2cap_sock_sendmsg()
968 	err = bt_sock_wait_ready(sk, msg->msg_flags);  in l2cap_sock_sendmsg()
969 	release_sock(sk);  in l2cap_sock_sendmsg()
983 	struct sock *sk = sock->sk;  in l2cap_sock_recvmsg()  local
984 	struct l2cap_pinfo *pi = l2cap_pi(sk);  in l2cap_sock_recvmsg()
987 	lock_sock(sk);  in l2cap_sock_recvmsg()
989 	if (sk->sk_state == BT_CONNECT2 && test_bit(BT_SK_DEFER_SETUP,  in l2cap_sock_recvmsg()
990 						    &bt_sk(sk)->flags)) {  in l2cap_sock_recvmsg()
992 			sk->sk_state = BT_CONNECTED;  in l2cap_sock_recvmsg()
996 			sk->sk_state = BT_CONFIG;  in l2cap_sock_recvmsg()
1005 	release_sock(sk);  in l2cap_sock_recvmsg()
1017 	lock_sock(sk);  in l2cap_sock_recvmsg()
1023 		if (!__sock_queue_rcv_skb(sk, pi->rx_busy_skb))  in l2cap_sock_recvmsg()
1033 	if (atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf >> 1)  in l2cap_sock_recvmsg()
1037 	release_sock(sk);  in l2cap_sock_recvmsg()
1044 static void l2cap_sock_kill(struct sock *sk)  in l2cap_sock_kill()  argument
1046 	if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket)  in l2cap_sock_kill()
1049 	BT_DBG("sk %p state %s", sk, state_to_string(sk->sk_state));  in l2cap_sock_kill()
1053 	l2cap_chan_put(l2cap_pi(sk)->chan);  in l2cap_sock_kill()
1054 	sock_set_flag(sk, SOCK_DEAD);  in l2cap_sock_kill()
1055 	sock_put(sk);  in l2cap_sock_kill()
1058 static int __l2cap_wait_ack(struct sock *sk, struct l2cap_chan *chan)  in __l2cap_wait_ack()  argument
1066 	add_wait_queue(sk_sleep(sk), &wait);  in __l2cap_wait_ack()
1081 		release_sock(sk);  in __l2cap_wait_ack()
1083 		lock_sock(sk);  in __l2cap_wait_ack()
1086 		err = sock_error(sk);  in __l2cap_wait_ack()
1099 	remove_wait_queue(sk_sleep(sk), &wait);  in __l2cap_wait_ack()
1105 	struct sock *sk = sock->sk;  in l2cap_sock_shutdown()  local
1110 	BT_DBG("sock %p, sk %p", sock, sk);  in l2cap_sock_shutdown()
1112 	if (!sk)  in l2cap_sock_shutdown()
1115 	lock_sock(sk);  in l2cap_sock_shutdown()
1117 	if (sk->sk_shutdown)  in l2cap_sock_shutdown()
1123 	sock_hold(sk);  in l2cap_sock_shutdown()
1125 	chan = l2cap_pi(sk)->chan;  in l2cap_sock_shutdown()
1134 		err = __l2cap_wait_ack(sk, chan);  in l2cap_sock_shutdown()
1140 		if (sk->sk_shutdown)  in l2cap_sock_shutdown()
1144 	sk->sk_shutdown = SHUTDOWN_MASK;  in l2cap_sock_shutdown()
1145 	release_sock(sk);  in l2cap_sock_shutdown()
1167 	lock_sock(sk);  in l2cap_sock_shutdown()
1169 	if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime &&  in l2cap_sock_shutdown()
1171 		err = bt_sock_wait_state(sk, BT_CLOSED,  in l2cap_sock_shutdown()
1172 					 sk->sk_lingertime);  in l2cap_sock_shutdown()
1176 	sock_put(sk);  in l2cap_sock_shutdown()
1179 	if (!err && sk->sk_err)  in l2cap_sock_shutdown()
1180 		err = -sk->sk_err;  in l2cap_sock_shutdown()
1182 	release_sock(sk);  in l2cap_sock_shutdown()
1191 	struct sock *sk = sock->sk;  in l2cap_sock_release()  local
1194 	BT_DBG("sock %p, sk %p", sock, sk);  in l2cap_sock_release()
1196 	if (!sk)  in l2cap_sock_release()
1199 	bt_sock_unlink(&l2cap_sk_list, sk);  in l2cap_sock_release()
1203 	sock_orphan(sk);  in l2cap_sock_release()
1204 	l2cap_sock_kill(sk);  in l2cap_sock_release()
1210 	struct sock *sk;  in l2cap_sock_cleanup_listen()  local
1216 	while ((sk = bt_accept_dequeue(parent, NULL))) {  in l2cap_sock_cleanup_listen()
1217 		struct l2cap_chan *chan = l2cap_pi(sk)->chan;  in l2cap_sock_cleanup_listen()
1227 		l2cap_sock_kill(sk);  in l2cap_sock_cleanup_listen()
1233 	struct sock *sk, *parent = chan->data;  in l2cap_sock_new_connection_cb()  local
1244 	sk = l2cap_sock_alloc(sock_net(parent), NULL, BTPROTO_L2CAP,  in l2cap_sock_new_connection_cb()
1246 	if (!sk) {  in l2cap_sock_new_connection_cb()
1251 	bt_sock_reclassify_lock(sk, BTPROTO_L2CAP);  in l2cap_sock_new_connection_cb()
1253 	l2cap_sock_init(sk, parent);  in l2cap_sock_new_connection_cb()
1255 	bt_accept_enqueue(parent, sk);  in l2cap_sock_new_connection_cb()
1259 	return l2cap_pi(sk)->chan;  in l2cap_sock_new_connection_cb()
1264 	struct sock *sk = chan->data;  in l2cap_sock_recv_cb()  local
1267 	lock_sock(sk);  in l2cap_sock_recv_cb()
1269 	if (l2cap_pi(sk)->rx_busy_skb) {  in l2cap_sock_recv_cb()
1279 		err = sk_filter(sk, skb);  in l2cap_sock_recv_cb()
1284 	err = __sock_queue_rcv_skb(sk, skb);  in l2cap_sock_recv_cb()
1296 		l2cap_pi(sk)->rx_busy_skb = skb;  in l2cap_sock_recv_cb()
1302 	release_sock(sk);  in l2cap_sock_recv_cb()
1309 	struct sock *sk = chan->data;  in l2cap_sock_close_cb()  local
1311 	l2cap_sock_kill(sk);  in l2cap_sock_close_cb()
1316 	struct sock *sk = chan->data;  in l2cap_sock_teardown_cb()  local
1328 	lock_sock_nested(sk, atomic_read(&chan->nesting));  in l2cap_sock_teardown_cb()
1330 	parent = bt_sk(sk)->parent;  in l2cap_sock_teardown_cb()
1332 	sock_set_flag(sk, SOCK_ZAPPED);  in l2cap_sock_teardown_cb()
1340 		l2cap_sock_cleanup_listen(sk);  in l2cap_sock_teardown_cb()
1341 		sk->sk_state = BT_CLOSED;  in l2cap_sock_teardown_cb()
1346 		sk->sk_state = BT_CLOSED;  in l2cap_sock_teardown_cb()
1349 		sk->sk_err = err;  in l2cap_sock_teardown_cb()
1352 			bt_accept_unlink(sk);  in l2cap_sock_teardown_cb()
1355 			sk->sk_state_change(sk);  in l2cap_sock_teardown_cb()
1361 	release_sock(sk);  in l2cap_sock_teardown_cb()
1367 	struct sock *sk = chan->data;  in l2cap_sock_state_change_cb()  local
1369 	sk->sk_state = state;  in l2cap_sock_state_change_cb()
1372 		sk->sk_err = err;  in l2cap_sock_state_change_cb()
1379 	struct sock *sk = chan->data;  in l2cap_sock_alloc_skb_cb()  local
1384 	skb = bt_skb_send_alloc(sk, hdr_len + len, nb, &err);  in l2cap_sock_alloc_skb_cb()
1390 	skb->priority = sk->sk_priority;  in l2cap_sock_alloc_skb_cb()
1399 	struct sock *sk = chan->data;  in l2cap_sock_ready_cb()  local
1402 	lock_sock(sk);  in l2cap_sock_ready_cb()
1404 	parent = bt_sk(sk)->parent;  in l2cap_sock_ready_cb()
1406 	BT_DBG("sk %p, parent %p", sk, parent);  in l2cap_sock_ready_cb()
1408 	sk->sk_state = BT_CONNECTED;  in l2cap_sock_ready_cb()
1409 	sk->sk_state_change(sk);  in l2cap_sock_ready_cb()
1414 	release_sock(sk);  in l2cap_sock_ready_cb()
1419 	struct sock *parent, *sk = chan->data;  in l2cap_sock_defer_cb()  local
1421 	lock_sock(sk);  in l2cap_sock_defer_cb()
1423 	parent = bt_sk(sk)->parent;  in l2cap_sock_defer_cb()
1427 	release_sock(sk);  in l2cap_sock_defer_cb()
1432 	struct sock *sk = chan->data;  in l2cap_sock_resume_cb()  local
1435 		sk->sk_state = BT_CONNECTED;  in l2cap_sock_resume_cb()
1439 	clear_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags);  in l2cap_sock_resume_cb()
1440 	sk->sk_state_change(sk);  in l2cap_sock_resume_cb()
1445 	struct sock *sk = chan->data;  in l2cap_sock_set_shutdown_cb()  local
1447 	lock_sock(sk);  in l2cap_sock_set_shutdown_cb()
1448 	sk->sk_shutdown = SHUTDOWN_MASK;  in l2cap_sock_set_shutdown_cb()
1449 	release_sock(sk);  in l2cap_sock_set_shutdown_cb()
1454 	struct sock *sk = chan->data;  in l2cap_sock_get_sndtimeo_cb()  local
1456 	return sk->sk_sndtimeo;  in l2cap_sock_get_sndtimeo_cb()
1461 	struct sock *sk = chan->data;  in l2cap_sock_suspend_cb()  local
1463 	set_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags);  in l2cap_sock_suspend_cb()
1464 	sk->sk_state_change(sk);  in l2cap_sock_suspend_cb()
1483 static void l2cap_sock_destruct(struct sock *sk)  in l2cap_sock_destruct()  argument
1485 	BT_DBG("sk %p", sk);  in l2cap_sock_destruct()
1487 	if (l2cap_pi(sk)->chan)  in l2cap_sock_destruct()
1488 		l2cap_chan_put(l2cap_pi(sk)->chan);  in l2cap_sock_destruct()
1490 	if (l2cap_pi(sk)->rx_busy_skb) {  in l2cap_sock_destruct()
1491 		kfree_skb(l2cap_pi(sk)->rx_busy_skb);  in l2cap_sock_destruct()
1492 		l2cap_pi(sk)->rx_busy_skb = NULL;  in l2cap_sock_destruct()
1495 	skb_queue_purge(&sk->sk_receive_queue);  in l2cap_sock_destruct()
1496 	skb_queue_purge(&sk->sk_write_queue);  in l2cap_sock_destruct()
1512 static void l2cap_sock_init(struct sock *sk, struct sock *parent)  in l2cap_sock_init()  argument
1514 	struct l2cap_chan *chan = l2cap_pi(sk)->chan;  in l2cap_sock_init()
1516 	BT_DBG("sk %p", sk);  in l2cap_sock_init()
1521 		sk->sk_type = parent->sk_type;  in l2cap_sock_init()
1522 		bt_sk(sk)->flags = bt_sk(parent)->flags;  in l2cap_sock_init()
1543 		security_sk_clone(parent, sk);  in l2cap_sock_init()
1545 		switch (sk->sk_type) {  in l2cap_sock_init()
1551 			bt_sk(sk)->skb_msg_name = l2cap_skb_msg_name;  in l2cap_sock_init()
1561 		if (!disable_ertm && sk->sk_type == SOCK_STREAM) {  in l2cap_sock_init()
1574 	chan->data = sk;  in l2cap_sock_init()
1587 	struct sock *sk;  in l2cap_sock_alloc()  local
1590 	sk = sk_alloc(net, PF_BLUETOOTH, prio, &l2cap_proto, kern);  in l2cap_sock_alloc()
1591 	if (!sk)  in l2cap_sock_alloc()
1594 	sock_init_data(sock, sk);  in l2cap_sock_alloc()
1595 	INIT_LIST_HEAD(&bt_sk(sk)->accept_q);  in l2cap_sock_alloc()
1597 	sk->sk_destruct = l2cap_sock_destruct;  in l2cap_sock_alloc()
1598 	sk->sk_sndtimeo = L2CAP_CONN_TIMEOUT;  in l2cap_sock_alloc()
1600 	sock_reset_flag(sk, SOCK_ZAPPED);  in l2cap_sock_alloc()
1602 	sk->sk_protocol = proto;  in l2cap_sock_alloc()
1603 	sk->sk_state = BT_OPEN;  in l2cap_sock_alloc()
1607 		sk_free(sk);  in l2cap_sock_alloc()
1613 	l2cap_pi(sk)->chan = chan;  in l2cap_sock_alloc()
1615 	return sk;  in l2cap_sock_alloc()
1621 	struct sock *sk;  in l2cap_sock_create()  local
1636 	sk = l2cap_sock_alloc(net, sock, protocol, GFP_ATOMIC, kern);  in l2cap_sock_create()
1637 	if (!sk)  in l2cap_sock_create()
1640 	l2cap_sock_init(sk, NULL);  in l2cap_sock_create()
1641 	bt_sock_link(&l2cap_sk_list, sk);  in l2cap_sock_create()